The Route module can give you travel options from your home to Mexico City. In July, daytime highs in Mexico City are 27°C, while nighttime lows are 15°C. Finish your sightseeing early on the 6th (Thu) to allow enough time to travel to Puerto Vallarta.

You can fly from Mexico City to Puerto Vallarta in 3.5 hours. Alternatively, you can drive; or take a bus. Expect a bit warmer temperatures when traveling from Mexico City in July; daily highs in Puerto Vallarta reach 37°C and lows reach 28°C. Finish your sightseeing early on the 9th (Sun) to allow enough time to travel back home.